[heft] "additionalModuleKindsToEmit" does not include source maps or static assets

[octogonz]

Please prefix the issue title with the project name i.e. [rush], [api-extractor] etc.

Is this a feature or a bug?

• [ ] Feature
• [x] Bug

Please describe the actual behavior.

Add a typescript.json config file that specifies additionalModuleKindsToEmit. For example:

.heft/typescript.json

/**
 * Configures the TypeScript plugin for Heft.  This plugin also manages linting.
 */
 {
  "$schema": "https://developer.microsoft.com/json-schemas/heft/typescript.schema.json",

  /**
   * If provided, emit these module kinds in addition to the modules specified in the tsconfig.
   * Note that this option only applies to the main tsconfig.json configuration.
   */
  "additionalModuleKindsToEmit": [
    // {
    //   /**
    //    * (Required) Must be one of "commonjs", "amd", "umd", "system", "es2015", "esnext"
    //    */
    //  "moduleKind": "amd",
    //
    //   /**
    //    * (Required) The path where the output will be written.
    //    */
    //    "outFolderPath": "lib-amd"
    // }
    {
      "moduleKind": "commonjs",
      "outFolderPath": "lib-commonjs"
    }
  ],
}

Also, configure copy-static-assets.json to copy .css files, for example:

.heft/copy-static-assets.json

{
  "$schema": "https://developer.microsoft.com/json-schemas/heft/copy-static-assets.schema.json",

  /**
   * File extensions that should be copied from the src folder to the destination folder(s).
   */
  "fileExtensions": [
    ".css"
  ]
}

What is the expected behavior?

The two output folders (my-project/lib and my-project/lib-commonjs) should both have .js.map files and copied .css files.

Instead, only my-project/lib has these files.

If this is a bug, please provide the tool version, Node.js version, and OS.

Tool: Heft version 0.3.1

CC @iclanton

[jasonswearingen]

related: https://github.com/microsoft/rushstack/issues/2141#issuecomment-684101858

[dmichon-msft]

This is currently by design, as source map generation is very expensive, and having multiple copies of .d.ts files, source maps, etc. massively bloats package sizes. This sounds more like a feature request to allow them this to be configurable.